CN107810065A - For crushing the method for milling material and grinding mill for implementing this method - Google Patents
For crushing the method for milling material and grinding mill for implementing this method Download PDFInfo
- Publication number
- CN107810065A CN107810065A CN201680034441.0A CN201680034441A CN107810065A CN 107810065 A CN107810065 A CN 107810065A CN 201680034441 A CN201680034441 A CN 201680034441A CN 107810065 A CN107810065 A CN 107810065A
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- CN
- China
- Prior art keywords
- milling
- grinding mill
- gas
- particle
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/186—Adding fluid, other than for crushing by fluid energy
- B02C17/1875—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone
- B02C17/1885—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone the applied gas acting to effect material separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/161—Arrangements for separating milling media and ground material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/186—Adding fluid, other than for crushing by fluid energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/068—Jet mills of the fluidised-bed type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
Abstract
The present invention relates to the method that milling material is crushed by grinding mill, grinding mill includes chamber of milling, chamber of milling is connected with milling material input unit and for the discharge unit of the particle through milling and the milling device of the particle including it is expected fineness for the milling material manufacture by inputting, wherein, milled in reducing atmosphere, the reducing atmosphere includes reducing gas.In addition, the present invention relates to the grinding mill with chamber of milling, chamber of milling is connected with milling material input unit and for the discharge unit of the particle through milling and the milling device of the particle including it is expected fineness for the milling material manufacture by inputting, wherein, reducing atmosphere is included in chamber of milling, is milled in the reducing atmosphere and the reducing atmosphere includes reducing gas.
Description
Technical field
The present invention relates to the side as described in the preamble for being used to crush milling material by grinding mill according to claim 1
Method and the grinding mill as described in the preamble for being used to implement this method according to claim 8.
Background technology
It is known have it is a variety of be used to crush the method for milling material and corresponding grinding mill, such as jet mill and especially connect
The dry mix grinding mill of continuous work.In the prior art, for jet mill and the operation method and construction of stirring grinding mill
Mode is referring particularly to corresponding open source literature, search key " the Strahlm ü hle (jet mill) " in wikipedia,
" Mill (grinding) ", " file：Fluidized bed jet mill.jpg ", " solidswiki Jet Mills ", " R ü
Hrwerkskugelm ü hle (agitating ball mill) ", " Ball Mill ", " Bead Mill " etc., the open state of these documents is all
It is before the filing date of the present application.
The particle of desired size can be manufactured by this grinding mill and its operation method.The particle material requirements without
When oxygen is ground, for example, magnet for being used in wind power plant rare earth or be commonly used to manufacture the HIGH-PURITY SILICON of magnet
In the case of, nowadays milled in practice in protective gas atmosphere.But it can not realize that anaerobic is ground with satisfied degree
Mill, protective gas can not provide the situation of complete anaerobic, thus still occur all the time in the particle milled serious and undesirable
The impurity for including oxygen, which compromises obtain material quality.
The content of the invention
It is therefore an object of the present invention to provide a kind of method by grinding mill crushing milling material and used in this
Grinding mill, particle or have more during at least than being ground in protective gas atmosphere to obtain milling for no oxygen impurities
The particle of milling of low oxygen impurities.
The purpose crushes the method for milling material and according to claim by according to claim 1 by grinding mill
8 grinding mill is realized.
Correspondingly, the present invention relates to the method that milling material is crushed by grinding mill, grinding mill to include chamber of milling, mill
Chamber is connected with milling material input unit and for the discharge unit of the particle through milling and including for the milling material by inputting
Manufacture with it is expected fineness particle milling device, wherein, according to present invention provide that, ground in reducing atmosphere
Mill, the reducing atmosphere include reducing gas.
In other words, by for the reduction reaction between caused particle and reduction reaction gas during mill processes
Reduction reaction gas be directed in chamber of milling or the reduction reaction gas in chamber of milling be present, and milled smashing
When material and the particle being generated by it reduction reaction is carried out by reduction reaction gas.Therefore, the invention provides milling and
The combination of reduction reaction simultaneously, or in other words crushed for reproducibility.
It in order to ensure carrying out desired reduction reaction in a desired manner, could dictate that according to this method, suitably set or control
The operational factor of grinding mill processed, such as production capacity in chamber of milling and residence time, discharge etc..
This method is preferably drawn with advantageous embodiment by method dependent claims and its combination.
The present invention also relates to the grinding mill with chamber of milling, and chamber of milling is with milling material input unit and for through milling
Particle discharge unit connection and including be used for by input milling material manufacture with expectation fineness particle dress of milling
Put, wherein, according to present invention provide that, reducing atmosphere is included in chamber of milling, milled in the reducing atmosphere and
The reducing atmosphere includes reducing gas.
In order to ensure carrying out desired reduction reaction in a desired manner, can suitably be set by the device by control
Or the operational factor of control grinding mill, such as production capacity in chamber of milling and residence time, discharge etc..
Grinding mill is preferably drawn with advantageous embodiment by device dependent claims and its combination.
In content in the present invention and herein, concept " reducing gas " also is understood as reduction reaction gas.
Reducing gas has the effect that reducing gas is combined with oxygen when running into oxygen.Using hydrogen (H2) make
To carry out following react during reducing gas：
2H2+O2->2H2O
And following react is carried out when using carbon monoxide as reducing gas：
2CO+O2->2CO2
The others of the present invention are preferable and/or advantageous embodiments and its each scheme by dependent claims knot
Close and drawn from the whole application documents of the present invention.
Embodiment
Some embodiments and its description are exemplarily provided further below.
The present invention is exemplarily only elaborated according to described embodiment and using example, i.e. the invention is not restricted to this
A little embodiments and using example.Drawn as method characteristic and device characteristic respective class from device explanation or method explanation.
The each feature for providing and/or showing related to specific embodiment is not limited to the embodiment or its with the embodiment
The combination of remaining feature, but can be combined in technical scheme with other arbitrary flexible programs, even if this feature is in the text
In do not relate separately to.
It is related to the method for crushing milling material by grinding mill, grinding mill includes chamber of milling, and chamber of milling is with grinding
Mill material input unit connect with the discharge unit for the particle through milling and including milling device, and milling device is for by inputting
Milling material manufacture is with the particle for it is expected fineness.This is milled in reducing atmosphere.Therefore, in chamber of milling
Reducing gas be present or reducing gas is inputted into chamber of milling, this conveys gas of milling to jet mill simultaneously in the preferred case
Body.
Thus this method is to mill and the combination of reduction reaction, or in other words simultaneously, is that reproducibility crushes.In order to
Ensure to carry out desired reduction reaction in a desired manner, could dictate that according to this method, suitably set or control the fortune of grinding mill
Row parameter, such as production capacity in chamber of milling and residence time, discharge etc..
In order to perform preceding method and its possible embodiment, the grinding mill with chamber of milling, chamber of milling are used
It is connected with milling material input unit and for the discharge unit of the particle through milling and is used for including milling device, milling device by defeated
Enter milling material manufacture with it is expected fineness particle, wherein, according to present invention provide that, in chamber of milling comprising reduction
Property atmosphere, is milled, and the reducing atmosphere includes reducing gas in the reducing atmosphere.In order to ensure in a desired manner
Desired reduction reaction is carried out, by the device by controlling, suitably can set or control the operational factor of grinding mill, such as
Production capacity and residence time, discharge in chamber of milling etc..
Preferably it is so designed that grinding mill so that fineness of milling d50<1μm.For this by the device by controlling, properly
Ground is set or the operational factor of control grinding mill, such as production capacity in chamber of milling and residence time, discharge etc..
It is furthermore preferred that reducing gas is hydrogen (H2) or carbon monoxide (CO) or the mixture with it.
Another preferred embodiment is set from the discharge unit for the particle through milling to milling material input unit
Return leading-in device so that the particle milled at least once passes through at least one times, preferably repeatedly by grinding mill so as to further by
Mill.
It further preferably could dictate that, be integrated with air bike.
It is highly preferred that grinding mill is the dry mix grinding mill especially continuously run.
Instead of stirring grinding mill, grinding mill is preferably jet mill, and the jet mill includes the nozzle for gas of milling
Formula enters device, to import the inside of chamber of milling for spraying the gas beam of milling milled, so as to be milled by what is inputted
Material manufacture has the particle for it is expected fineness, and gas of milling includes reducing gas or reducing gas is used as gas of milling, should be also
Raw-gas needs to be used for reduction reaction, and the particle through milling should be subjected to the reduction reaction.
In content in the present invention and herein, concept " reducing gas " also is understood as reduction reaction gas.
Reducing gas has the effect that reducing gas is combined with oxygen when running into oxygen.Using hydrogen (H2) make
To carry out following react during reducing gas：
2H2+O2->2H2O
And following react is carried out when using carbon monoxide as reducing gas：
2CO+O2->2CO2
Preferred embodiment
Reduction reaction is used as using hydrogen below based on what physical relation and correlated variables showed embodiments of the present invention
The principle and effect and special benefits of gas or abbreviation (kurz) reducing gas.
Because using hydrogen as reduction reaction gas or if necessary use simultaneously gas of milling can not only aoxidize from it
Metal is obtained in thing, and can implement to mill in reducing atmosphere.Another particularity can be advantageously employed herein：In phase
With temperature and pressure under, the hydrogen being under pressure due to its thermodynamic behaviour is with compared to the speed of such as nitrogen about 3.7
Expansion.Thus H is being passed through2It is advantageously real without other consumings in the case of using jet mill when producing reducing atmosphere
Higher gas efflux velocity is showed.
It is used as environment of milling by the reducing atmosphere in chamber of milling or according to technique, such as high-purity can be protected
Metal Al, Si etc. are especially to prevent aoxidizing.Avoid and at the surface of the particles, particularly sent out in the region of fracture due to oxidation
Raw passivation.The reactivity of the metal of high-purity is retained.
Made in the case where being milled using jet mill and injection using special reducing gas or reduction reaction gas
For gas of milling, in addition to the advantages of above-mentioned reproducibility is milled, also there are other advantageous effects to milling in itself.
Final speed for achievable milling material and particle and for fine powder it is broken, i.e. for milling particle most
Whole fineness<It is important that the spilling speed for gas of milling for 5 μm -10 μm, and the spilling speed is given by the following formula：
Finally, the energy of introducing is vital for the mechanical milling material yield of intended size, and for exhausted
Thermal expansion is drawn：
Thus exemplarily for following material：
Nitrogen：p0=4bar (abs)；T0=20 DEG C
Vapor：p0=40bar (abs)；T0=320 DEG C
Hydrogen：p0=4bar (abs)；T0=20 DEG C
Following result is obtained with corresponding special variable：
| N2 | Vapor | H2 | |
| Adiabatic exponent κ | 1.4 | 1.41 | |
| Gas constant R [J/kgK] | 297 | 4124 | |
| Dynamic viscosity [10-6Pas] | 16.6 | 14.2 | 8.4 |
| Eliminate the density [kg/m after stress3] | 1.25 | 0.57 | 0.09 |
| Velocity of sound c0[m/s] | 343 | 504 | 1280 |
| Adiabatic velocity of sound [m/s] | 449 | 1150 | 1661 |
Such as find out from the form, the jet velocity (adiabatic velocity of sound) of hydrogen is about 3.7 times of nitrogen.Thus, comparing
When hydrogen and nitrogen, kinetic energy of the particle in collision is about 13.6 times, and this is significant advantage for fine crushing.
Embodiment and preferred embodiment in description exemplarily only show the present invention and the present invention is unlimited
In this, but including following all flexible programs, modification, alternative and assembled scheme, technical staff being capable of base
In herein especially in claim and the content in specification introduction in recapitulative description and the description of embodiment
These schemes are drawn, and these schemes are combined with its professional knowledge and prior art.The institute of the present invention can especially be combined
Some single feature and embodiment.
Claims (14)
1. crushing the method for milling material by grinding mill, the grinding mill includes chamber of milling, and the chamber of milling is with milling
Material input unit connects with the discharge unit for the particle through milling, and the chamber of milling includes being used for the material of milling by inputting
Milling device of the material manufacture with the particle for it is expected fineness, it is characterised in that milled in reducing atmosphere, it is described to go back
Originality atmosphere includes reducing gas.
2. according to the method for claim 1, it is characterised in that fineness of milling d50<1μm.
3. method according to claim 1 or 2, it is characterised in that the mixture using hydrogen or carbon monoxide or with it
As reducing gas.
4. according to any method of the preceding claims, it is characterised in that the material of milling milled at least once
Material passes through, preferably repeatedly milled by grinding mill at least one times.
5. according to any method of the preceding claims, it is characterised in that provided with point with integrated air bike
From device.
6. according to any method of the preceding claims, it is characterised in that the grinding mill is especially continuously to run
Dry mix grinding mill.
7. method according to any one of claim 1 to 5, it is characterised in that the grinding mill is jet mill, in institute
State in jet mill, milled by injection and material of milling is crushed in the case where using the gas of milling in gas beam form of milling
Material, there is the particle for it is expected fineness so as to produce, and the gas of milling includes reducing gas or reducing gas is used as milling
Gas, the reducing gas need to be used for reduction reaction, and the particle through milling should be subjected to the reduction reaction.
8. grinding mill, the grinding mill has chamber of milling, and the chamber of milling is with milling material input unit and for through milling
Particle discharge unit connection, and the chamber of milling includes being used for by the milling material manufacture inputted with it is expected fineness
The milling device of particle, it is characterised in that reducing atmosphere is included in the chamber of milling, is entered in the reducing atmosphere
Row is milled, and the reducing atmosphere includes reducing gas.
9. grinding mill according to claim 8, it is characterised in that fineness of milling d50<1μm.
10. grinding mill according to claim 8 or claim 9, it is characterised in that the reducing gas be hydrogen or carbon monoxide or
With its mixture.
11. the grinding mill according to any one of claim 8 to 10, it is characterised in that set from for through milling
The discharge unit of grain returns leading-in device to milling material input unit so that the particle milled at least once passes through, be excellent at least one times
Choosing repeatedly passes through grinding mill, so as to be further able to be milled or be milled.
12. the grinding mill according to any one of claim 8 to 11, it is characterised in that be integrated with air bike.
13. the grinding mill according to any one of claim 8 to 12, it is characterised in that the grinding mill is especially continuous
The dry mix grinding mill of operation.
14. the grinding mill according to any one of claim 8 to 12, it is characterised in that the grinding mill is jet mill,
The nozzle-type that the jet mill includes being used to mill gas enters device, to be led for spraying the gas beam of milling milled
Enter the inside of chamber of milling, so as to have the particle for it is expected fineness by the milling material inputted manufacture, and
The gas of milling includes the reducing gas of the reduction reaction for the particle through milling, or the gas of milling is that this is gone back
Raw-gas.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202015004167 | 2015-06-15 | ||
| DE202015004167.1 | 2015-06-15 | ||
| PCT/DE2016/000247 WO2016202320A1 (en) | 2015-06-15 | 2016-06-14 | Method for comminuting material to be ground and mill therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107810065A true CN107810065A (en) | 2018-03-16 |
Family
ID=56549990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680034441.0A Pending CN107810065A (en) | 2015-06-15 | 2016-06-14 | For crushing the method for milling material and grinding mill for implementing this method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11376604B2 (en) |
| EP (1) | EP3307440A1 (en) |
| CN (1) | CN107810065A (en) |
| WO (1) | WO2016202320A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110856830A (en) * | 2018-08-23 | 2020-03-03 | 耐驰干法研磨技术有限公司 | Method and device for discharging difficult-to-grind particles from a spiral jet mill |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102149323B1 (en) | 2016-11-07 | 2020-08-31 | 와커 헤미 아게 | How to pulverize solids containing silicon |
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| US6196479B1 (en) * | 1998-06-29 | 2001-03-06 | “HolderBank”Financiere Glarus AG | Method and device for granulating and comminuting liquid slags |
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2016
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- 2016-06-14 US US15/736,683 patent/US11376604B2/en active Active
- 2016-06-14 WO PCT/DE2016/000247 patent/WO2016202320A1/en active Application Filing
- 2016-06-14 EP EP16742153.6A patent/EP3307440A1/en active Pending
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| US6196479B1 (en) * | 1998-06-29 | 2001-03-06 | “HolderBank”Financiere Glarus AG | Method and device for granulating and comminuting liquid slags |
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| CN203663981U (en) * | 2013-12-18 | 2014-06-25 | 兴化市恒威生物技术有限公司 | Multifunctional crusher for preparing florfenicol powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110856830A (en) * | 2018-08-23 | 2020-03-03 | 耐驰干法研磨技术有限公司 | Method and device for discharging difficult-to-grind particles from a spiral jet mill |
Also Published As
| Publication number | Publication date |
|---|---|
| US11376604B2 (en) | 2022-07-05 |
| US20180214884A1 (en) | 2018-08-02 |
| EP3307440A1 (en) | 2018-04-18 |
| WO2016202320A1 (en) | 2016-12-22 |
| WO2016202320A8 (en) | 2018-03-29 |
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